Top 12 Open-Source Alternatives to Mockoon

Product categories

API API Design API Management API Tools APIs Appointments and Scheduling Automated Testing Business Workflows Developer Tools HTTP Proxies Productivity Testing

Summary

The top open-source alternatives to Mockoon are WireMock, Postman, and MockServer. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

WireMock Landing Page
1

WireMock

WireMock - a web service test double for all occasions.
Pricing:
- Open Source
#Developer Tools #API Tools #APIs 14 social mentions
Postman Landing Page
2

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#APIs #API Tools #Developer Tools 27 social mentions
MockServer Landing Page
3

MockServer

Easy mocking of any system you integrate with via HTTP or HTTPS.
Pricing:
- Open Source
#Developer Tools #API Tools #APIs 3 social mentions
Webhook.site Landing Page
4

Webhook.site

Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.
Pricing:
- Open Source
- Freemium
- $14.0 / Monthly
#Developer Tools #APIs #Sales Workflow 68 social mentions
Mocko.dev Landing Page
5

Mocko.dev

Proxy your API, choose which endpoints to mock in the cloud and inspect traffic, for free. Speed up your development and integrations tests.
Pricing:
- Open Source
- Free
#Developer Tools #API Tools #APIs 2 social mentions
Mockintosh Landing Page
6

Mockintosh

Mocks for microservice environments
Pricing:
- Open Source
#API Tools #Developer Tools #APIs
Insomnia REST Landing Page
7

Insomnia REST

The most intuitive cross-platform REST API Client ð´
Pricing:
- Open Source
#API Tools #API #Developer Tools 120 social mentions
Spark.NET Landing Page
8

Spark.NET

The .NET Web Framework for Makers
Pricing:
- Open Source
#Web App #Design Tools #Developer Tools 1 social mentions
Cal.com Landing Page
9

Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
Pricing:
- Open Source
#APIs #Open Source #Calendar And Scheduling 53 social mentions
PEST Landing Page
10

PEST

An elegant PHP testing framework with a focus on simplicity
Pricing:
- Open Source
#Productivity #Programming #Developer Tools 15 social mentions
StopLight Landing Page
11

StopLight

Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality in your API lifecycle, all with an easy, enjoyable developer experience.
Pricing:
- Open Source
- Freemium
- Free Trial
#API Tools #APIs #API 23 social mentions
Requestly Landing Page
12

Requestly

Debug & Modify network requests - loved by 100K+ web devs
Pricing:
- Open Source
- Freemium
- Free Trial
#Testing #Localhost Tools #Developer Tools 24 social mentions